Application of Well-Seismic Integration Reservoir Prediction Technology in YDCZ Oil Layer in A Block

The YDCZ oil layer in DQ Oilfield is meandering river deposit, with multiple sand bodies, rapid phase change and serious Sand bodies interleaving. On the basis of seismic multi-attribute optimization technology, waveform indication inversion and geostatistics inversion methods were applied. Firstly, the prediction results of the two methods in different frequency bands were compared, and then the integration inversion experiment was conducted according to the sensitivity of different frequency bands. After integration inversion, the thin layer contact relationship was optimized, the identification accuracy of thick layer was improved, and the transverse change relationship of sand bodies was clearer. The quantitative reservoir prediction of optimal inversion results is realized. The prediction results further guide to describe the main sand bodies interleaving property and trend, correct the single river boundary of compound meandering zone, improve logging sedimentary facies zone map, and find out the development status of sand bodies between wells. This method embodies the idea of facies-controlled, and the predicted results are more consistent with the geological observations. The reservoir prediction has achieved good results, which provided favorable support for the deployment of block well location. The block achieved efficient production capacity utilization.